Straining device



Jan.1s,1949. f LLLANGE 2,459,660

STRAINING DEVICE Filed Nov-.5, 1947 l INVENToR LILA L. LANGE @ff I @hm-f ATTO R N EYS Patented Jan. 18, 1949 i f 2,45sr66o"1 Y LsfrJRAINING DEVICE Lila'lI.` Lange, Chicago? Ill;

Application November.` 5, 1947, Serial No. 784,247

slclaims. (C1. 21m-i419):-

invention relates. to, improvements in.

vibrating s'creen;..to.;provid.in.a device of this character. a rotaryf cone. pumpprovided with ineansforpositively throwing the uidfbycentrif ugalrcecagainsta.screen in. such a manner that the. entire inner.. face of the screen will 'have material" impingedtlereagainst'; to provide in a devie.` o`f the. character described unitary means fr rotatingthecone pumpandvscreen; to pro'- vi'di'n a device offthis' .cliaracte'rautomatic means associatedwith'tlie rotarycone for.. returningv the i'idfwhieli doesnotpass ythroug'ln'the screen into the condena to. .provide a devmezofftuis char.- acter which is:v simple in construction and`operatin,finexpensi`ve .to manufacture; readily assembljdland disassembled.' and' containing.. substantiiiyrreparts wnichmnget; outer-orden Ani iimsltr'auv'e embodiment 0f'--tnisi invention is" shownin tl'eiaccompanying .drawings in `which f Tiny invention taken' on the line I -l "of'FgI 2f Fig; 2L- is a vertical sectional :view through the strainer' embodyingtlie present' invention;

llig; 3 isjan' elevationalviewftaken on the line Referringin detaiL to. thedrawings,1,.provide. askeletalgframe basewpreferably. constructed of anglesirons .and.con1prising vertical legs. I, bottom vsiderails 2`and top side rails. 3, all anchored together. at theirA endsmbyV any suitable means, such4 .asrby welding... The..\base .supports acy 1indrical ..-metal castingegenerallyf indicated.by.I the; numerald; the lbottom wa-ll 5t of which restsxfon: thetonilrazllsiras is clearlyrshowrnin. the idrawing'-fA The;1 casting: 4 f isz' prox/ident with'. an integrally; formedrouter. diagonally: extending side@ wall (ilx andi arr integrallytformedi dividing; verticaly` Wall'v l? wherebyitof-form a-ftroughjLikefpassagewaydbe tween the '-wal1s Stand i 1 The=` wall 6i is-"provided with airloutletport'for -spout A portion 'Ifoff the- -ootto'm Vwall' 5 lies-"iii ayplane --belowthat Y of tliei-plane ofl thefwall V5 i and is provided A"with al diagonally extendingportiow I 'I';w11erebytojfoifm- 2i. 1 a boWll-lilie structure?,thepurposeof 'which will." hereinafterbe describedl.

A guideor tl'irust'bearing I2"is positioned cen#` trallyfin. portion I 0 5ofthe .bottom ,walljftov recel-ve the vertically` extending`4 shaft'y I3 ofi the. ,.rnotor. I 4i The motor. I4'is`..rigidly` securedlin thebase; by any suitablemeans, such .las bybrackets, braces i. or the like which' are not fillllxstrated;l as, being.; obvious. f l

Acylindrical: screen cage I5.`op,en.:at the 'bote torn, is provided with ra .metal ring, I 6" having a l groove-I'I'into which thelowerend'olfthe screen. I8-is securely seated." The' ring, I`6` is also pro-v videdwith a groove` I9 in which the .upper end of the wall T'seats, .wherebyt supportltle` screen cage I5.

The' ring I6 is also providedwith.radialiarmsy 20', 2'I 'and`22. The arms 2Dand`2I`are eacliprovided with a tiered '23'Iwhichextends dou/'nwardlyl through the Wall 5'and` carries suitable elastic,f washers 24, such as` rubber. or the llik'e,` andllocking ,means 25onA its. ends, .such as collars.` or. nuts.` orthe like',y whereby'to flexibly secure the screen.` cage |5i1rposition.

The. cover 26f`ofthe screen cage I5` isproviddzl. with an annular. boss. 2T havingV a. groove 281 therein into which the upper edge of. the screen I8 seats.. ThecoverZSis held in position by, supportingmrods' 29 extending betweentlie "ring I Ii4 andthe cover 261 The cover 26 is also providedwith. av funnelsliaped port 3.0 which-:extends downwardlyinto. the interior offtl'ie` screen cage. The lower open" '1 ing Blf-therein lies in the same horizonal plane.. as'thel ring` I6.

The arm' 2.2'of the vring I6 is. provided.` witlia. thrust bearing 32,"throug.h which-.the upper! end ofsliaft t 33 projects. The upper` endof fshaft. 33S is provided with an elastic washer 3`4"andla collar.; 35 which is. anchored to` said.shaft.33..

The wall 5 is also provided witha flexible jour` nal, such as an elastic. washer. or. support V31.5? through which theshaft 33 projects. The lower endlof'shaft 33 is .provided with an eccentric 311' held in position thereon by collar 38'and.' pulley. wheel 39.V Theshaft 33 is driven. through the pulley Wheel .40 mountedbnshaft l3andlbelt .41..

The. pump 42 'comprises an invertedtruncatedl cone-like .housing ll3v whichis .ope-n .at `its top and provided witha plurality of vspaced steps or offsets, Mliaving a plurality of .aperturesM therein, each. locatedadjacent an oil'setvor step 44. Aswill be. apparent from theidrawings, the upper endoi. the. conewall '43" substantially errvel'ops the lower'end oftheiunnelisliaped" port"4 30S-'ofthe screen` cage' l5. The lower end of the pump is provided with a bearing sleeve 45 which is rigidly seated on the upper end of the shaft; I3 and has a number of fin members or blades 46 secured thereto and radially arranged and which are inclined from the vertical away from the direction of rotation of the cone wall. The lower free ends of the blades 46 are rigidly secured to the lower end of the cone wall 4 3. i

The upperend oi my strainer is venclosed by a cylindrical cover 41 having a side wall 48 and a top wall 49 in Awhich an opening 50 is provided.-`

The diameter of the side wall is slightly smaller than the diameter of the upper end of the side Wall 6 of the casting 4, whereby it readily supports the cover 41 as will be apparent from Fig. 2 of the drawing. f f i In operation the motor I4 is started whereby -it will, through shaft ILL-cause the pump to rotate and simultaneously vcause `the Screen cage to vibrate through the action of the eccentric 31 on.

shaft 3,3 which is rotated by pulley wheels 39,40 andbelt4l. y*

, The fluid material to be strained is poured into thedevice through the opening U and into the funnel 30 which directs it into the lower end of the rotating pump l42, whereby, because of the diagonal walls and the speed of rotation, the fluid will creep upwardly towardthe top ofthe pump byV the centrifugal action. gresses upwardly and passes over each step 44 it tends to hesitate and b uild up in mass whereby a portion of the material is ejected through the apertures 44' and against `the screen face I8 while the balance continues its upward movement to the next step. The steps in each case serve as accumulators so that the material being lejected is substantially uniform for each stepv whereby the entire inner face of the screen is brought into use. n

The iluid will also be'forcibly thrown out of the pump 42 and over the top marginal edgeof the pump and against the vibrating kscreen I8 where that portion of the material that passes through the screen will flow downwardly into the trough 8 and outwardly from the apparatus through spout 9 where it is collected.

That portion of the material which does not pass through the screen will flow downwardly into bowl 1. When the height of the fluid in the bowl 1 reaches the opening in the bottom of the pump,the blades 46, which are rotating at high speed, will cause the liquid to be drawn up into the interior' of the pump 42 and will be processed again until it either passes through thescreen or settles in the bottom of the bowl 1. In this manner the rejected material is continually reclaimed and all possible usable fluid passed through thel screen I8.

If the residueis large and the bowl 1' becomes lled with heavy particles, it may be drained olf through drain ytube 5I which is attached at one end Ito the portion ID. Suitable valves, not shown, are to be provided for manually controlling this draining.

It will. now be apparent that the vibrating screen' improves the performance of the unit in that it makes it possible, when straining fluids, to cause more usable fluid to pass through the screen than was heretofore possible in systems employing stationary screens. This is 1a direct result of lthe rVibrating action which prevents particles in the fluid from lodging themselves on the screen or becoming embedded in themesh where normally they tend to clog the screen and eventually As the fluid prosubstantially close all of the opening whereby none of the fluid may pass through the screen. Also the vibrating screen assists in causing the iluid to pass downwardly more readily on both sides of the screen mesh.

It can readily Ibe appreciated lthat the top cover 41 can easily be removed for cleaning purposes by merely lifting the same away from the apparatus. Similarly, the screen cage may .be readily removed b y removing the' collars 25 and 35 whereby lthe screen cage may be lifted upwardly away from the apparatus and, therefore, n it can be readily cleaned. When the cover 41 and the upper end of said funnel being positioned the screen cage I5 have been removed from the appara-tus, the bowl 1' and trough 8 are exposed land they can each be easily cleaned in any of the many suitable ways.`

Although but one lspecific embodiment of this yinvention is herein shown .and described, it will be understood that numerous details of the structure shown may be alteredor omitted Without departing from the spirit of the invention as dened bythe following claims.

I claim:

1. A iluid strainingdevice comprising a base, a motor mounted centrally'in and to said base and havingan elongated drive shaft extendingin` a vertical plane; a cylindrical casting open at itsv upper end and havin-g a bottom wall, said casting being positioned on the upper end of said base and provided with .a diagonally extending pe-V having .an axially vpositioned funnel extendingv downwardly and having its dischargeopening located Lbelow, the plane of the' lower marginal' edge of said screen cage; a pump comprising an impeller and a hollow casing att-ached thereto secured to the upper end of said -drive shaft and extending into said bowl, means for rotating said pump and vadapted to draw into the interi'or of said pump` any material to be strained falling into said bowl, said pump being located partially within said bowl and partially within the inner area of said scr-een and spaced away therefrom,

within the upper area of said screen,` and the remainder of said funnel being positioned within and spaced away from said hollow casing; Vmeans for simultaneously vibrating said screen while said pump is being rotated; and 4a cylindrical G0 l cover housing for said screen.

2. A straining device of the class described, comprising a motorI having an elongated vertical drive shaft, a pump' comprising an impeller and a hollow casing attached thereto positioned `on the upper end of said shaft and Icarried thereby, a vertically positioned tubular cylindricalscreen cage spaced away from and housing the upper end of said hollow casing, a verticallyextending cylindrical casting located between saidpump and motor having a dividing wall to form a bowl and a trough, with saiddividing wall below and inv alignment .with the wall of the screen-cages.

vertically extending funnel member spaced awayy fromand substantiallysurrounded by saidhollow casing, a cylindrical housing for said screen cage,

and means for vibrating said screen cage simultaneously with rotation of said pump.

3. The device according to claim 2 wherein said means for vibrating said screen cage comprises a vertically extending driven shaft journaled at its upper end to said screen cage and in a bearing positioned in the bottom wall of said trough, the lower end of said shaft being provided with an eccentric and a pulley wheel, said vertical drive shaft also being provided with a pulleyv wheel positioned on said shaft below the bottom wall of said bowl and aligned with said pulley wheel on said driven shaft, and a belt connecting said pulley wheels.

4. The device according to claim 2, wherein said pump includes a series of radially arranged inclined blades, the outer lower edges of said blades being rigidly secured to said lower end of said hollow casing, the inner edges of said blades being rigidly secured to a bearing which is rigidly secured to the upper end of said drive shaft whereby upon rotation of said drive shaft said blades will pick up and draw into the hollow casing any material to be screened falling into said bowl.

5. A uid straining device comprising a base, a motor mounted centrally in and to said base and having an elongated drive shaft extending in a Vertical plane; a cylindrical casting open at its upper end and having a bottom wall, said casting being positioned on the upper end of said base and provided with a diagonally extending peripheral wall and a vertically extending inner dividing wall, whereby to form a trough between said walls, the bottom wall within the area of said inner wall lying in a plane below that of said bottom wall of said trough and having a portion thereof lying in a diagonal plane, whereby to form a bowl; a tubular cylindrical screen cage having 1 its wall positioned above and in line with said dividing wall and without the area of said trough whereby the screened material will flowinto said trough; a cover plate for said screen cage having an axially positioned funnel extending downwardly and having its discharge opening located below the plane of the lower marginal edge of said screen cage; a pump comprising an impeller and a hollow casing attached thereto secured to the upper end of said drive shaft and extending into said bowl to draw into the interior of said hollow casing any material to be strained falling into said bowl, said pump being located partially within said bowl and partially within the inner area of said screen and spaced away therefrom, the upper end of said funnel being positioned within the upper area of said screen and the remainder of said funnel being positioned within and spaced away from said hollow casing; and a cylindrical cover housing for said screen.

6. A straining device of the class described, comprising a motor having an elongated vertical drive shaft, a pump positioned on the upper end of said shaft and carried thereby, said pump com prising an impeller and a hollow conical casing secured thereto, a series of offsets in the upper portion of said hollow casing, said offsets each provided with a series of spaced ports, a vertically positioned tubular cylindrical screen cage spaced away from and housing the upper end of said hollow casing, a vertically extending cylindrical casting located between said pump and motor having a dividing wall to form a bowl and a trough with the dividing wall in line with and below the screen cage wall, a vertically extending funnel member spaced away from and substantially surrounded by said hollow casing, a cylindrical housing for said screen cage, and means for vibrating said screen cage simultaneously upon rotation of said pump.

7. The device according to claim 6 wherein said means for vibrating said screen cage comprises a vertically extending driven shaft journaled at its upper end to said screen cage and in a bearing positioned in the bottom wall of said trough, the lower end of said shaft being provided with an eccentric and a pulley wheel, said vertical drive shaft also being provided with a pulley wheel positioned on said shaft below the bottom wall of said bowl and aligned with said pulley wheel on said driven shaft, and a belt connecting said pulley wheels.

8. The device according to claim 6, wherein said REFERENCES CITED The following references are of record in the file of this patent:

UNITED 'STATES PATENTS Number Name Date 1,465,931 Collins Aug. 28, 1923 1,769,586 Luense July 1, 1930 1,769,588 Luense July 1, 1930 2,382,492 Lomax Aug. 14, 1945 

